sync code with last improvements from OpenBSD
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lib/libX11/man/XAnyEvent.man
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lib/libX11/man/XAnyEvent.man
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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining
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.\" a copy of this software and associated documentation files (the
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.\" "Software"), to deal in the Software without restriction, including
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.\" without limitation the rights to use, copy, modify, merge, publish,
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.\" distribute, sublicense, and/or sell copies of the Software, and to
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.\" permit persons to whom the Software is furnished to do so, subject to
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.\" the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be included
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.\" in all copies or substantial portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
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.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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.\" OTHER DEALINGS IN THE SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the X Consortium shall
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.\" not be used in advertising or otherwise to promote the sale, use or
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.\" other dealings in this Software without prior written authorization
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.\" from the X Consortium.
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.\"
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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
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.\" Digital Equipment Corporation
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.\"
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.\" Portions Copyright \(co 1990, 1991 by
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.\" Tektronix, Inc.
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.\"
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.\" Permission to use, copy, modify and distribute this documentation for
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.\" any purpose and without fee is hereby granted, provided that the above
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.\" copyright notice appears in all copies and that both that copyright notice
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.\" and this permission notice appear in all copies, and that the names of
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.\" Digital and Tektronix not be used in in advertising or publicity pertaining
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.\" to this documentation without specific, written prior permission.
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.\" Digital and Tektronix makes no representations about the suitability
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.\" of this documentation for any purpose.
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.\" It is provided "as is" without express or implied warranty.
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.\"
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.\"
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.TH XAnyEvent __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
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.SH NAME
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XAnyEvent, XEvent \- generic X event structures
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.SH STRUCTURES
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All the event structures declared in
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.RB < X11/Xlib.h >
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have the following common members:
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.EX
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typedef struct {
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int type;
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unsigned long serial; /\&* # of last request processed by server */
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Bool send_event; /\&* true if this came from a SendEvent request */
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Display *display; /\&* Display the event was read from */
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Window window;
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} XAnyEvent;
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.EE
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.LP
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The type member is set to the event type constant name that uniquely identifies
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it.
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For example, when the X server reports a
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.B GraphicsExpose
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event to a client application, it sends an
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.B XGraphicsExposeEvent
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structure with the type member set to
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.BR GraphicsExpose .
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The display member is set to a pointer to the display the event was read on.
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The send_event member is set to
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.B True
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if the event came from a
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.B SendEvent
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protocol request.
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The serial member is set from the serial number reported in the protocol
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but expanded from the 16-bit least-significant bits to a full 32-bit value.
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The window member is set to the window that is most useful to toolkit
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dispatchers.
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.LP
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The
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.B XEvent
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structure is a union of the individual structures declared for each event type:
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.EX
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typedef union _XEvent {
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int type; /\&* must not be changed */
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XAnyEvent xany;
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XKeyEvent xkey;
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XButtonEvent xbutton;
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XMotionEvent xmotion;
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XCrossingEvent xcrossing;
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XFocusChangeEvent xfocus;
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XExposeEvent xexpose;
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XGraphicsExposeEvent xgraphicsexpose;
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XNoExposeEvent xnoexpose;
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XVisibilityEvent xvisibility;
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XCreateWindowEvent xcreatewindow;
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XDestroyWindowEvent xdestroywindow;
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XUnmapEvent xunmap;
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XMapEvent xmap;
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XMapRequestEvent xmaprequest;
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XReparentEvent xreparent;
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XConfigureEvent xconfigure;
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XGravityEvent xgravity;
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XResizeRequestEvent xresizerequest;
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XConfigureRequestEvent xconfigurerequest;
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XCirculateEvent xcirculate;
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XCirculateRequestEvent xcirculaterequest;
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XPropertyEvent xproperty;
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XSelectionClearEvent xselectionclear;
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XSelectionRequestEvent xselectionrequest;
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XSelectionEvent xselection;
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XColormapEvent xcolormap;
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XClientMessageEvent xclient;
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XMappingEvent xmapping;
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XErrorEvent xerror;
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XKeymapEvent xkeymap;
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long pad[24];
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} XEvent;
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.EE
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.LP
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An
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.B XEvent
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structure's first entry always is the type member,
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which is set to the event type.
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The second member always is the serial number of the protocol request
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that generated the event.
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The third member always is send_event,
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which is a
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.B Bool
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that indicates if the event was sent by a different client.
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The fourth member always is a display,
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which is the display that the event was read from.
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Except for keymap events,
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the fifth member always is a window,
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which has been carefully selected to be useful to toolkit dispatchers.
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To avoid breaking toolkits,
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the order of these first five entries is not to change.
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Most events also contain a time member,
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which is the time at which an event occurred.
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In addition, a pointer to the generic event must be cast before it
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is used to access any other information in the structure.
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.SH "SEE ALSO"
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XButtonEvent(__libmansuffix__),
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XCreateWindowEvent(__libmansuffix__),
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XCirculateEvent(__libmansuffix__),
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XCirculateRequestEvent(__libmansuffix__),
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XColormapEvent(__libmansuffix__),
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XConfigureEvent(__libmansuffix__),
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XConfigureRequestEvent(__libmansuffix__),
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XCrossingEvent(__libmansuffix__),
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XDestroyWindowEvent(__libmansuffix__),
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XErrorEvent(__libmansuffix__),
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XExposeEvent(__libmansuffix__),
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XFocusChangeEvent(__libmansuffix__),
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XGraphicsExposeEvent(__libmansuffix__),
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XGravityEvent(__libmansuffix__),
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XKeymapEvent(__libmansuffix__),
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XMapEvent(__libmansuffix__),
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XMapRequestEvent(__libmansuffix__),
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XPropertyEvent(__libmansuffix__),
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XReparentEvent(__libmansuffix__),
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XResizeRequestEvent(__libmansuffix__),
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XSelectionClearEvent(__libmansuffix__),
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XSelectionEvent(__libmansuffix__),
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XSelectionRequestEvent(__libmansuffix__),
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XUnmapEvent(__libmansuffix__),
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XVisibilityEvent(__libmansuffix__)
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.br
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\fI\*(xL\fP
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